|
(11) | EP 2 392 807 A3 |
| (12) | EUROPEAN PATENT APPLICATION |
|
|
|
|
|||||||||||||||||||||||
| (54) | Fuel supply apparatus for internal combustion engine |
| (57) A fuel supply apparatus for an internal combustion engine having a plurality of cylinders,
which supplies fuel through fuel injection valves provided corresponding to the plurality
of cylinders. An amount of fuel supplied to the engine is controlled by changing a
fuel injection period of said fuel injection valve, and performing a fuel injection
with a plurality of injection modes including a reference injection mode in which
the fuel injection periods corresponding to the plurality of cylinders do not overlap
with each other. A fuel injection amount parameter for controlling a valve opening
period of the fuel injection valve in the reference injection mode, is calculated
according to an operating condition of said engine. When the injection mode is determined
to be another injection mode in which the fuel injection periods corresponding to
a part or all of the plurality of cylinders overlap with each other, the fuel injection
amount parameter is corrected so as to compensate shortage or oversupply of the fuel
injection amount according to a correction parameter indicative of a time period which
affects a pressure change of the fuel supplied to the fuel injection valve caused
by employing the other injection mode.
|